Near-to-eye display device with rectangular exit pupil

The invention discloses a near-to-eye display device with a rectangular exit pupil, which comprises an optical lens group and a waveguide system, wherein the micro-displays are arranged at the coupling-in end of the waveguide system, the optical lens group is used for receiving image light, the optical lens group comprises a PBS prism, a reflector and a first lens, the PBS prism comprises a light incident surface, a light collimation surface and a light emergent surface, and image light enters the PBS prism from the light incidence surface and is emitted from the light collimation surface; a reflecting mirror which is positioned on one side of the light collimating surface and is used for reflecting and collimating the image light emitted from the light collimating surface, wherein after the image light reflected by the reflector enters the PBS prism again, the image light is emitted from the light emitting surface; a first lens located between the light exit surface and the coupling-in end of the waveguide s